CN104607524A - Tailor welded blank integral drawing forming device and method for large-scale curved surface part - Google Patents
Tailor welded blank integral drawing forming device and method for large-scale curved surface part Download PDFInfo
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- CN104607524A CN104607524A CN201410853041.5A CN201410853041A CN104607524A CN 104607524 A CN104607524 A CN 104607524A CN 201410853041 A CN201410853041 A CN 201410853041A CN 104607524 A CN104607524 A CN 104607524A
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Abstract
The invention discloses a tailor welded blank integral drawing forming device and a method for a large-scale curved surface part, relates to the tailor welded blank integral forming device and method, and the problem that in the prior art, fractures exist in tailor welded blank integral forming is solved. The tailor welded blank integral drawing forming device comprises a male die, a blank holder, a female die and a liquid filling chamber; the portion between the blank holder and the female die is used for containing an unequal thickness tailor welded blank; the profile of the male die is provided with a male die groove which is consistent with the shape of a thick wall area where a sheet metal weld joint is located, blank holder grooves which are consistent with the shape of the thick wall area where the sheet metal weld joint is located are formed in an inner hole of the blank holder and the lower surface of the blank holder simultaneously, and the male die groove and the blank holder grooves are used for preventing the portion, perpendicular to the direction of the weld joint, of the thick wall area from deforming; or female die grooves which are consistent with the shape of the thick wall area where the sheet metal weld joint is located are formed in the upper surface of the female die and an inner hole of the female die and used for preventing the portion, perpendicular to the direction of the weld joint, of the thick wall area from deforming. The invention further provides a tailor welded blank integral drawing forming method of the large-scale curved surface part through using the tailor welded blank integral drawing forming device. The tailor welded blank integral drawing forming device and the method for the large-scale curved surface part are used for filling liquid, drawing and forming for the unequal thickness and symmetrical tailor welded blank through adopting uniform strength bearing design.
Description
Technical field
The present invention relates to a kind of tailor welded monolithic molding device and method.
Background technology
The curved-surface piece such as end socket are widely used in the field such as petrochemical industry, Aero-Space, and diameter, generally at more than 2000mm, is a kind of large-scale curved surface plate material parts.Existing manufacture method is that drawing or pull-shaped method produce melon lobe part, then melon lobe is welded into spherical part.Due to such part usually and the combination of cylinder section form pressure vessel, therefore the reliability of butt welded seam and bearing capacity requirement high.Current existing first piecemeal is shaped the manufacturing process welded again, and its shortcoming is that weld seam is many, and constraint (restraint) degree is large, and force assemblage, welding deformation easily produce high-level welding residual stress, and under pressure-bearing condition, reliability is low.At present, the problems such as existing welding residual stress in the urgent need to address is high, poor reliability, to meet the service demand of environment for use.
Fundamentally to solve the problem, then need to adopt monolithic molding technical substitution to be first shaped the manufacture of welding again, reduce weld seam.At present, strip width is generally at about 2500mm, and can not meet the billet size requirement needed for monolithic molding, monolithic molding still needs the plate blank of welding.Owing to there is the difference of weld seam and mother metal performance, especially more obvious for aluminium alloy difference, and the weld seam being in bottom in curved-surface piece drawing process is subject to the effect of two-way tension, stress level is high, weld seam easily breaks, the integrally formed formability of restriction test specimen.For the problems referred to above, prior art does not provide the welding plate deep-drawing method and device that are suitable for large-scale curved.
Summary of the invention
The technical problem solved:
Cracking defect is produced for weld seam in welding plate deep-drawing process, and the problem of the large-scale tailor welded curved-surface piece that cannot be shaped, the invention provides welding plate deep-drawing method and the device of a kind of large-scale curved, to avoid the breaking of weld seam in drawing process, be shaped large-scale tailor welded curved-surface piece.
The present invention solves the problems of the technologies described above the technical scheme taked to be:
The tailor welded integral drawing building mortion of large-scale curved, described device comprises punch, blank holder, die and liquid-filled chamber; Die is placed on liquid-filled chamber and the two is tightly connected, and the lower plane of die is fixedly connected with the upper plane of liquid-filled chamber; Blank holder is located at above die; Punch can move up and down along blank holder, die; Liquid-filled chamber is provided with the liquid injection hole communicated with its dielectric cavity, and liquid injection hole is used for being connected with hydraulic system; It is characterized in that, for placing plate between blank holder and die, described plate refers to non-uniform thickness tailor welded;
The profile of punch has the punch groove matched with the heavy wall district shape at plate weld seam place, simultaneously on the endoporus and lower surface of blank holder, having the blank holder groove matched with the heavy wall district shape at plate weld seam place, deforming perpendicular to the direction of weld seam for retraining heavy wall district;
Or, the upper surface and endoporus of die having the die groove matched with the heavy wall district shape at plate weld seam place, deforming perpendicular to the direction of weld seam for retraining heavy wall district.
The heavy wall district thickness that described plate is one side is weld seam place is the non-uniform thickness tailor welded faced directly higher than the stepped surfaces of other tenuity thickness, another side.
Described plate is symmetrical along weld seam Y-axis, the heavy wall district of plate and tenuity also symmetrical at weld seam Y-axis.
When non-uniform thickness tailor welded stepped surfaces upward time, described punch groove along the central lateral plane of its bearing of trend through the axis of punch, punch groove is consistent with convex model line profile shape along the outer surface extension shape of punch, and the shape of cross section of punch groove is suitable with the heavy wall district shape of plate; Described blank holder groove is two parts groove be oppositely arranged along blank holder axis mirror image, every part of trench comprises and to be arranged on blank holder endoporus hole wall and with the contour blank holder inner hole groove of endoporus be arranged on blank holder lower surface and the blank holder lower surface groove of through ring wall, and blank holder inner hole groove is communicated with at intersection's rounding off with blank holder lower surface groove; Two parts groove is coplanar and through the axis of blank holder along the central lateral plane of its bearing of trend; The shape of cross section of blank holder groove is suitable with the heavy wall district shape of plate.
When the facing directly upward of non-uniform thickness tailor welded, described die groove is two parts groove be oppositely arranged along die axis mirror image, every part of trench comprises and is arranged on die upper surface and the die upper surface groove of through ring wall and be arranged on die inner hole groove on die endoporus hole wall and contour with endoporus, and die upper surface groove is communicated with at intersection's rounding off with die inner hole groove; Two parts groove is coplanar and through the axis of die along the central lateral plane of its bearing of trend; The shape of cross section of die groove is suitable with the heavy wall district shape of plate.
Heavy wall district after described non-uniform thickness tailor welded is machined and the Thickness Ratio of tenuity are not less than 1.5, and heavy wall district and tenuity round-corner transition, fillet is greater than the thickness difference of heavy wall district and tenuity.
The width of described punch groove and blank holder trench cross section and the degree of depth are greater than plate heavy wall district 0.5mm, and the dome angle in cross section is greater than the knuckle 0.5mm of plate heavy wall district and tenuity.
The width of described die trench cross section and the degree of depth are greater than plate heavy wall district 0.5mm, and the dome angle in cross section is greater than the knuckle 0.5mm of plate heavy wall district and tenuity.
Utilize the tailor welded integral drawing manufacturing process of large-scale curved of above-mentioned building mortion, the step of the method is as follows:
The topping up hole of step one, liquid-filled chamber is connected with hydraulic system: be first connected with hydraulic system by the liquid injection hole on liquid-filled chamber, then in dielectric cavity, injects fluid media (medium);
Step 2, then place the plate of non-uniform thickness at die upper surface, plate has the one side of stepped surfaces upwards;
Step 3, blank holder move down and apply pressure-pad-force, and blank holder groove and plate heavy wall district coincide:
Control blank holder by the flanging cylinder of hydraulic press to move down, the groove of blank holder coincide to plate, heavy wall district enters the groove of plate, blank holder lower surface contacts with tenuity and applies pressure-pad-force F, and pressure-pad-force F is blank holder, the flange area of retained part and the product of unit blank holder force suffered by plate between die;
Step 4, control punch by the master cylinder of hydraulic press and move down, contact until the groove of punch merges with the heavy wall district kissing of plate with tenuity, in liquid-filled chamber, liquid medium is filled with by topping up hole, progressively liquid medium is filled up in liquid-filled chamber, air is progressively discharged, and makes liquid-filled chamber inside set up the pressure of 5MPa;
Step 5, when liquid-filled chamber inside set up the pressure of 5MPa after, punch is descending, increase the pressure-pad-force of blank holder to 3000KN ~ 5000KN, continue to be filled with liquid medium to liquid-filled chamber by topping up hole, improve the pressure of liquid-filled chamber internal liquid medium to 15MPa, until drawing terminates, be shaped tailor welded curved-surface piece.
The present invention has following beneficial effect:
The present invention proposes the welding plate deep-drawing method of a kind of large-scale curved and device is suitable for, to the liquid filling deep-drawing forming of the symmetrical tailor welded of non-uniform thickness adopting equal strength carrying design, manufacturing relatively large overall curved-surface piece.
Advantage of the present invention is the non-uniform thickness tailor welded by equal strength carrying design, and weld seam bearing cross-section thickness is increased, and reduces the tension suffered by vertical weld direction, and resistance to fracture ability improves; The groove of cross section, plate heavy wall district and punch surface matches, and larger distortion occurs in constraint vertical weld direction, heavy wall district, improves the anti-UNSTABLE FAILURE ability of weld seam further; In addition, utilize the liquid-filled chamber pressure in liquid filling deep-drawing forming process can strengthen useful friction between blank and punch, reduce tension, reduce the possibility broken in weak weld metal zone; The experience plastic deformation of fusion length direction, intensity is high, and test specimen bearing capacity is strong.For large complicated carved, adopt non-uniform thickness tailor welded, can realize monolithic molding, avoid first being shaped and weld the welding stress of generation afterwards, by force, reliability is high for product bearing capacity and shock-resistant ability.The inventive method and the liquid filling deep-drawing forming of device for adopting equal strength to carry the symmetrical tailor welded of non-uniform thickness of design.
Accompanying drawing explanation
Fig. 1 is building mortion structural representation (front sectional view) of the present invention, and Fig. 2 is the front sectional view of the punch 1 in the present invention, Fig. 3 be Fig. 2 at view; Fig. 4 is the front sectional view of blank holder 2, and Fig. 5 is the top view of Fig. 4; Fig. 6 is the top view (in figure, A represents tenuity, and B represents heavy wall district, and C represents weld seam) of plate 7, and Fig. 7 is the D-D sectional view of Fig. 6; Fig. 8 is the front sectional view of die 3, and Fig. 9 is the top view of Fig. 8.
Detailed description of the invention
Detailed description of the invention one: as shown in Fig. 1 to 7, the tailor welded integral drawing building mortion of large-scale curved described in present embodiment comprises punch 1, blank holder 2, die 3 and liquid-filled chamber 4; Die 3 is placed on liquid-filled chamber 4 and the two is tightly connected by sealing ring 6, and the lower plane of die 3 is fixedly connected with the upper plane of liquid-filled chamber 4; Blank holder 2 is located at above die 3; Punch 1 can move up and down along blank holder 2, die 3; Liquid-filled chamber 4 is provided with the liquid injection hole 4-1 communicated with its dielectric cavity 5, and liquid injection hole 4-1 is used for being connected with hydraulic system; For placing plate 7 between blank holder 2 and die 3, described plate 7 refers to non-uniform thickness tailor welded;
As Fig. 2-5, the profile of punch 1 has the punch groove 1-1 matched with the heavy wall district shape at plate weld seam place, simultaneously on the endoporus and lower surface of blank holder 2, having the blank holder groove 2-1 matched with the heavy wall district shape at plate weld seam place, deforming perpendicular to the direction of weld seam for retraining heavy wall district;
The heavy wall district thickness that described plate 7 is one sides is weld seam place is the non-uniform thickness tailor welded faced directly higher than the stepped surfaces of other tenuity thickness, another side.Described plate 7 along weld seam Y-axis symmetry (described weld seam is vertical masonry joint), the heavy wall district of plate 7 and tenuity also symmetrical at weld seam Y-axis.
Through the axis of punch 1, (groove of punch 1 is symmetrical with the face crossing punch 1 axle center along the central lateral plane of its bearing of trend for described punch groove 1-1, and be distributed in the outer surface of whole punch 1), punch groove 1-1 is consistent with convex model line profile shape along the outer surface extension shape of punch 1, and the shape of cross section of punch groove 1-1 is suitable with the heavy wall district shape of plate 7;
Described blank holder groove 2-1 is two parts groove be oppositely arranged along blank holder 2 axis mirror image, every part of trench comprises and to be arranged on blank holder endoporus hole wall and with the contour blank holder inner hole groove 2-1-1 of endoporus be arranged on blank holder lower surface and the blank holder lower surface groove 2-1-2 of through ring wall, and blank holder inner hole groove 2-1-1 is communicated with at intersection's rounding off with blank holder lower surface groove 2-1-2; Two parts groove is coplanar and through the axis (groove of blank holder 2 is symmetrical with the face crossing blank holder 2 axle center, and is distributed in the lower surface of blank holder 2, inner hole surface and radius area) of blank holder 2 along the central lateral plane of its bearing of trend; The shape of cross section of blank holder groove 2-1 is suitable with the heavy wall district shape of plate 7.
Device described in present embodiment be suitable for when non-uniform thickness tailor welded stepped surfaces upward time, namely the stepped surfaces of non-uniform thickness tailor welded is placed in the situation between blank holder 2 and die 3 upward.
Detailed description of the invention two: as shown in FIG. 8 and 9, the tailor welded integral drawing building mortion of large-scale curved described in present embodiment, on the upper surface and endoporus of die 3, only having the die groove 3-1 matched with the heavy wall district shape at plate weld seam place, deforming perpendicular to the direction of weld seam for retraining heavy wall district.Described die groove 3-1 is two parts groove be oppositely arranged along die 3 axis mirror image, every part of trench comprises and is arranged on die upper surface and the die upper surface groove 3-1-1 of through ring wall and be arranged on die inner hole groove 3-1-2 on die endoporus hole wall and contour with endoporus, and die upper surface groove 3-1-1 is communicated with at intersection's rounding off with die inner hole groove 3-1-2; Two parts groove is coplanar and through the axis of die 3 along the central lateral plane of its bearing of trend; The shape of cross section of die groove 3-1 is suitable with the heavy wall district shape of plate 7.
Punch 1 and blank holder 2 are all without the need to arranging groove.Other composition and annexation identical with device described in detailed description of the invention one.
Device described in present embodiment is suitable for when the facing directly upward of non-uniform thickness tailor welded, and namely the straight surface of non-uniform thickness tailor welded is placed in the situation between blank holder 2 and die 3 upward.
Detailed description of the invention three: utilize the step of the tailor welded integral drawing manufacturing process of large-scale curved of the building mortion of detailed description of the invention one as follows:
The topping up hole of step one, liquid-filled chamber is connected with hydraulic system: be first connected with hydraulic system by the liquid injection hole 4-1 on liquid-filled chamber 4, then in dielectric cavity 5, inject fluid media (medium);
Step 2, then place the plate 7 of non-uniform thickness at die 3 upper surface, plate 7 has the one side of stepped surfaces upwards;
Step 3, blank holder move down and apply pressure-pad-force, and blank holder groove and plate heavy wall district coincide:
Control blank holder 2 by the flanging cylinder of hydraulic press to move down, the groove of blank holder 2 coincide to plate 7, heavy wall district enters the groove of plate 7, blank holder 2 lower surface contacts with tenuity and applies pressure-pad-force F, and pressure-pad-force F is blank holder 2, the flange area of retained part and the product of unit blank holder force suffered by plate 7 between die 3;
Step 4, control punch 1 by the master cylinder of hydraulic press and move down, contact until the groove of punch 1 merges with the heavy wall district kissing of plate 7 with tenuity, in liquid-filled chamber 4, liquid medium 5 is filled with by topping up hole 4-1, liquid medium 5 is progressively filled up in liquid-filled chamber 4, air is progressively discharged, and makes liquid-filled chamber 4 inside set up the pressure of 5MPa;
Step 5, after the pressure of 5MPa is set up in liquid-filled chamber 4 inside, punch 1 is descending, increase the pressure-pad-force of blank holder 2 to 3000KN, continue to be filled with liquid medium 5 to liquid-filled chamber 4 by topping up hole 4-1, improve the pressure of liquid-filled chamber 4 internal liquid medium 5 to 15MPa, until drawing terminates, be shaped tailor welded curved-surface piece.
Detailed description of the invention four: utilize the step of the tailor welded integral drawing manufacturing process of large-scale curved of the building mortion of detailed description of the invention two and detailed description of the invention three similar.Only facing directly upward of non-uniform thickness tailor welded.
Detailed description of the invention five: utilize the step of the tailor welded integral drawing manufacturing process of large-scale curved of the building mortion of detailed description of the invention one to be described as follows again:
(1) adopt two boards to carry out welding, again machine adding method make circular plate 7, as shown in Figure 3, the thickness in plate heavy wall district is t
0, width is w, the thickness of tenuity is t
1, the knuckle between tenuity and heavy wall district is R.
(2) mould is in open mode, in liquid-filled chamber 4, liquid medium 5 is filled from topping up hole 4-1 by external hydraulic pump, plate 7 is placed on the centre position of die 3, the place, heavy wall district of plate 7 is towards upper, drive blank holder 2 descending by forcing press blankholder slide, the groove 2-1 of blank holder 2 and the heavy wall district of blank 7 match, and apply initial pressure-pad-force, the unit blank holder force size in region of exerting pressure is 1-2MPa, drive the punch 1 be attached thereto descending by forcing press drawing slide block, the groove 1-1 of punch 1 and the heavy wall district of plate 7 match, stop when contacting with plate 7 upper surface, realize sealing by the sealing ring 6 between die 3 and liquid-filled chamber 4, ensure that external hydraulic pump and pressure valve can set up the initial pressure 3-10MPa in liquid-filled chamber,
(3) after initial pressure 3-10MPa is set up in liquid-filled chamber 4 inside, forcing press drawing slide block drives punch 1 to continue descending, carry out drawing, the pressure-pad-force of blank holder 2 is increased by blankholder slide, the unit blank holder force size in region of exerting pressure is 2-4MPa, in drawing process, by the pressure limit in external hydraulic pump and pressure valve control liquid-filled chamber 4 at 5-15MPa, blank 1 flows into gradually, heavy wall district reclines the groove 1-1 of punch 1 gradually, tenuity reclines all the other working surfaces of punch 1, after drawing and forming terminates, unloading topping up room pressure and pressure-pad-force, forcing press drawing slide block drives punch 1 backhaul, blankholder slide drives blank holder 2 up, mould is made to be in open mode, take out drawing part formed thereby.
Embodiment:
Provide and utilize device and method molding large aluminium alloy tailor welded curved-surface piece of the present invention:
Target drip molding Internal periphery is half ellipsoidal surface, and bus equation is
plate is 2A12 aluminium alloy, and shaping plate external diameter is 4000mm, tenuity thickness is 5mm, and heavy wall district thickness is 8.5mm;
Forming process is as follows:
(1) alloy plate material of employing two pieces of width 2000mm, thickness 8.5mm welds, carry out the stamping process plate 7 that machining makes non-uniform thickness again, make tenuity thickness be 5mm, the knuckle R between tenuity and heavy wall district is 3.5mm, and shape as shown in Figure 3;
(2) mould is in open mode, shaping plate 7 is placed on die 3, shaping plate 7 heavy wall zone have knuckle towards upper (cascaded surface upward), punch 1 (Fig. 2) with groove 1-1 is descending, stop when contacting with shaping plate 7 upper surface, the groove 1-1 of punch 1 and the heavy wall district of shaping plate 7 match, blank holder 2 descending (Fig. 3), the groove 2-1 of blank holder 2 and the heavy wall district of shaping plate 7 match, and apply the pressure-pad-force of 18000KN, in liquid-filled chamber 4, liquid medium 5 is filled with by topping up hole 4-1, liquid medium 5 is progressively filled up in liquid-filled chamber 4, air is progressively discharged, and make liquid-filled chamber 4 inside set up the pressure of 5MPa,
(3) after the pressure of 5MPa is set up in liquid-filled chamber 4 inside, punch 1 is descending, increase the pressure-pad-force of blank holder 2 to 3000KN, continue to be filled with liquid medium 5 to liquid-filled chamber 4 by topping up hole 4-1, improve the pressure of liquid-filled chamber 4 internal liquid medium 5 to 15MPa, until drawing terminates, the diameter that is shaped is 3350mm aluminium alloy tailor welded curved-surface piece.
Found out by above-mentioned, apparatus of the present invention and method plastic go out diameter be the curved-surface piece of 3350mm aluminium alloy splice-welded plate deep drawing forming, after tested, diameter formed thereby is that the bearing capacity of the curved-surface piece of 3350mm aluminium alloy splice-welded plate deep drawing forming is more than or equal to 2.7Mpa; On year-on-year basis under condition, improve 30% than adopting the method for the welding again that is first shaped.
Claims (9)
1. the tailor welded integral drawing building mortion of large-scale curved, described device comprises punch (1), blank holder (2), die (3) and liquid-filled chamber (4); Die (3) is placed on liquid-filled chamber (4) and the two is tightly connected, and the lower plane of die (3) is fixedly connected with the upper plane of liquid-filled chamber (4); Blank holder (2) is located at die (3) top; Punch (1) can move up and down along blank holder (2), die (3); Liquid-filled chamber (4) is provided with the liquid injection hole (4-1) communicated with its dielectric cavity (5), and liquid injection hole (4-1) is for being connected with hydraulic system; It is characterized in that, for placing plate (7) between blank holder (2) and die (3), described plate (7) refers to non-uniform thickness tailor welded;
The profile of punch (1) has the punch groove (1-1) matched with the heavy wall district shape at plate weld seam place, simultaneously on the endoporus and lower surface of blank holder (2), having the blank holder groove (2-1) matched with the heavy wall district shape at plate weld seam place, deforming perpendicular to the direction of weld seam for retraining heavy wall district;
Or, the upper surface and endoporus of die (3) having the die groove (3-1) matched with the heavy wall district shape at plate weld seam place, deforming perpendicular to the direction of weld seam for retraining heavy wall district.
2. the tailor welded integral drawing building mortion of a kind of large-scale curved according to claim 1, is characterized in that: the heavy wall district thickness that described plate (7) is one side is weld seam place is the non-uniform thickness tailor welded faced directly higher than the stepped surfaces of other tenuity thickness, another side.
3. the tailor welded integral drawing building mortion of a kind of large-scale curved according to claim 2, it is characterized in that: described plate (7) is symmetrical along weld seam Y-axis, and heavy wall district and the tenuity of plate (7) are also symmetrical at weld seam Y-axis.
4. the tailor welded integral drawing building mortion of a kind of large-scale curved according to claim 3, is characterized in that: when non-uniform thickness tailor welded stepped surfaces upward time,
Described punch groove (1-1) is along the axis of central lateral plane through punch (1) of its bearing of trend, punch groove (1-1) is consistent with convex model line profile shape along the outer surface extension shape of punch (1), and the shape of cross section of punch groove (1-1) is suitable with the heavy wall district shape of plate (7);
Described blank holder groove (2-1) is two parts groove be oppositely arranged along blank holder (2) axis mirror image, every part of trench comprises and being arranged on blank holder endoporus hole wall and the blank holder inner hole groove (2-1-1) contour with endoporus and be arranged on blank holder lower surface and the blank holder lower surface groove (2-1-2) of through ring wall, and blank holder inner hole groove (2-1-1) is communicated with at intersection's rounding off with blank holder lower surface groove (2-1-2); Two parts groove and axis through blank holder (2) coplanar along the central lateral plane of its bearing of trend; The shape of cross section of blank holder groove (2-1) is suitable with the heavy wall district shape of plate (7).
5. the tailor welded integral drawing building mortion of a kind of large-scale curved according to claim 3, is characterized in that: when the facing directly upward of non-uniform thickness tailor welded,
Described die groove (3-1) is two parts groove be oppositely arranged along die (3) axis mirror image, every part of trench comprises and is arranged on die upper surface and the die upper surface groove (3-1-1) of through ring wall and be arranged on die inner hole groove (3-1-2) on die endoporus hole wall and contour with endoporus, and die upper surface groove (3-1-1) is communicated with at intersection's rounding off with die inner hole groove (3-1-2); Two parts groove and axis through die (3) coplanar along the central lateral plane of its bearing of trend; The shape of cross section of die groove (3-1) is suitable with the heavy wall district shape of plate (7).
6. the tailor welded integral drawing building mortion of a kind of large-scale curved according to claim 1,2,3,4 or 5, it is characterized in that: the heavy wall district after described non-uniform thickness tailor welded is machined and the Thickness Ratio of tenuity are not less than 1.5, heavy wall district and tenuity round-corner transition, fillet is greater than the thickness difference of heavy wall district and tenuity.
7. the tailor welded integral drawing building mortion of a kind of large-scale curved according to claim 6, it is characterized in that: the width in described punch groove (1-1) and blank holder groove (2-1) cross section and the degree of depth are greater than plate (7) heavy wall district 0.5mm, the dome angle in cross section is greater than the knuckle 0.5mm of plate (7) heavy wall district and tenuity.
8. the tailor welded integral drawing building mortion of a kind of large-scale curved according to claim 6, it is characterized in that: width and the degree of depth in described die groove (3-1) cross section are greater than plate (7) heavy wall district 0.5mm, and the dome angle in cross section is greater than the knuckle 0.5mm of plate (7) heavy wall district and tenuity.
9. utilize the tailor welded integral drawing manufacturing process of large-scale curved of building mortion described in arbitrary claim in claim 1 to 8, it is characterized in that the step of the method is as follows:
The topping up hole of step one, liquid-filled chamber is connected with hydraulic system: be first connected with hydraulic system by the liquid injection hole (4-1) on liquid-filled chamber (4), then in dielectric cavity (5), injects fluid media (medium);
Step 2, then place the plate (7) of non-uniform thickness at die (3) upper surface, plate (7) has the one side of stepped surfaces upwards;
Step 3, blank holder move down and apply pressure-pad-force, and blank holder groove and plate heavy wall district coincide:
Control blank holder (2) by the flanging cylinder of hydraulic press to move down, the groove of blank holder (2) coincide to plate (7), heavy wall district enters the groove of plate (7), blank holder (2) lower surface contacts with tenuity and applies pressure-pad-force F, and pressure-pad-force F is the flange area of retained part and the product of unit blank holder force suffered by the plate (7) between blank holder (2), die (3);
Step 4, control punch (1) by the master cylinder of hydraulic press and move down, contact until the groove of punch (1) merges with the heavy wall district kissing of plate (7) with tenuity, in liquid-filled chamber (4), liquid medium (5) is filled with by topping up hole (4-1), liquid medium (5) is progressively filled up in liquid-filled chamber (4), air is progressively discharged, and makes liquid-filled chamber (4) inside set up the pressure of 5MPa;
Step 5, after the pressure of 5MPa is set up in liquid-filled chamber (4) inside, punch (1) is descending, increase the pressure-pad-force of blank holder (2) to 3000KN ~ 5000KN, continue to be filled with liquid medium (5) to liquid-filled chamber (4) by topping up hole (4-1), improve the pressure of liquid-filled chamber (4) internal liquid medium (5) to 15MPa, until drawing terminates, be shaped tailor welded curved-surface piece.
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| CN201410853041.5A CN104607524B (en) | 2014-12-31 | 2014-12-31 | The tailor welded integral drawing forming device of a kind of large-scale curved part and method |
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| CN201410853041.5A CN104607524B (en) | 2014-12-31 | 2014-12-31 | The tailor welded integral drawing forming device of a kind of large-scale curved part and method |
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| CN108161353A (en) * | 2017-12-25 | 2018-06-15 | 哈尔滨工业大学 | A kind of uniform integrally formed method of large aluminum alloy tailor welded end socket of performance |
| CN108161353B (en) * | 2017-12-25 | 2019-07-02 | 哈尔滨工业大学 | A kind of uniform integrally formed method of large aluminum alloy tailor welded end socket of performance |
| CN109013819A (en) * | 2018-09-26 | 2018-12-18 | 宁波市江北保隆消声系统制造有限公司 | A kind of production method of ripple bend pipe |
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| CN109967588A (en) * | 2019-04-12 | 2019-07-05 | 北京卫星制造厂有限公司 | A kind of thick welding sheet hydroforming method of aluminium alloy difference |
| CN109967588B (en) * | 2019-04-12 | 2020-07-14 | 北京卫星制造厂有限公司 | Liquid filling forming method for aluminum alloy differential thickness tailor-welded blank |
| CN110328278B (en) * | 2019-08-14 | 2020-06-23 | 哈尔滨工业大学 | Large thin-wall curved surface part forming device and method |
| CN110328278A (en) * | 2019-08-14 | 2019-10-15 | 哈尔滨工业大学 | A kind of large thin-wall curved-surface piece forming device and method |
| CN111745029A (en) * | 2020-07-06 | 2020-10-09 | 哈尔滨工业大学 | Method and device for forming curved surface piece with radial difference thickness |
| CN113020394A (en) * | 2021-03-04 | 2021-06-25 | 北京航空航天大学 | Method and device for forming tubular part |
| CN113588541A (en) * | 2021-06-30 | 2021-11-02 | 北京卫星制造厂有限公司 | Test method for hydro-forming performance and forming rule of tailor-welded blank |
| CN113607632A (en) * | 2021-06-30 | 2021-11-05 | 北京卫星制造厂有限公司 | A test device that is used for welding board hydroforming performance and shaping law |
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| CN113732154A (en) * | 2021-09-18 | 2021-12-03 | 中航西安飞机工业集团股份有限公司 | Two-time deep drawing forming method for long annular lip with deep U-shaped cross section and beak-shaped middle part |
| CN113996692A (en) * | 2021-10-28 | 2022-02-01 | 广东仰天宇航空科技有限公司 | Mold for liquid-filled stretching of polyurethane bag and molding process |
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